/// <summary>
/// Construct new AutoScroll object that will scroll the given target object within it's container
/// by attaching to the mouse events of the container.
/// </summary>
/// <param name="target">The target object to scroll</param>
/// <param name="zoom">The master MapZoom object that manages the actual render transform</param>
public AutoScroll(FrameworkElement target, MapZoom zoom)
{
_container = target.Parent as FrameworkElement;
_target = target;
_target.MouseDown += new MouseButtonEventHandler(OnMouseDown);
_target.MouseMove += new MouseEventHandler(OnMouseMove);
_target.MouseWheel += new MouseWheelEventHandler(OnMouseWheel);
Keyboard.AddKeyDownHandler(_target, new KeyEventHandler(OnKeyDown));
_zoom = zoom;
}
/// <summary>
/// Construct new Pan gesture object.
/// </summary>
/// <param name="target">The target to be panned, must live inside a container Panel</param>
/// <param name="zoom"></param>
public Pan(FrameworkElement target, MapZoom zoom) : base(target)
{
this._target = target;
this._container = _target.Parent as FrameworkElement;
if (this._container == null)
{
// todo: localization
throw new ArgumentException("Target object must live in a Panel");
}
this._zoom = zoom;
}
/// <summary>
/// Construct new RectangleSelectionGesture object for selecting things in the given target object.
/// </summary>
/// <param name="target">A FrameworkElement</param>
/// <param name="zoom">The MapZoom object that wraps this same target object</param>
public RectangleSelectionGesture(FrameworkElement target, MapZoom zoom, ModifierKeys mods)
: base(target)
{
_mods = mods;
_target = target;
_container = _target.Parent as ScrollViewer;
if (_container == null)
{
throw new ArgumentException("Target object must live in a Panel");
}
_zoom = zoom;
_target.MouseLeftButtonDown += new MouseButtonEventHandler(OnMouseLeftButtonDown);
_target.MouseLeftButtonUp += new MouseButtonEventHandler(OnMouseLeftButtonUp);
_target.MouseMove += new MouseEventHandler(OnMouseMove);
}
